Method Compile

endless-tunnel/app/src/main/cpp/shader.cpp:60–127

}

void Shader::Compile() {
  const char *vsrc = 0, *fsrc = 0;
  GLint status = 0;

  LOGD("Compiling shader.");
  LOGD("Shader name: %s", GetShaderName());

  vsrc = GetVertShaderSource();
  fsrc = GetFragShaderSource();

  mVertShaderH = glCreateShader(GL_VERTEX_SHADER);
  mFragShaderH = glCreateShader(GL_FRAGMENT_SHADER);
  if (!mVertShaderH || !mFragShaderH) {
    LOGE("*** Failed to create shader.");
    ABORT_GAME;
  }
  glShaderSource(mVertShaderH, 1, &vsrc, NULL);
  glCompileShader(mVertShaderH);
  glGetShaderiv(mVertShaderH, GL_COMPILE_STATUS, &status);
  if (status == 0) {
    LOGE("*** Vertex shader compilation failed.");
    _printShaderLog(mVertShaderH);
    ABORT_GAME;
  }
  LOGD("Vertex shader compilation succeeded.");

  glShaderSource(mFragShaderH, 1, &fsrc, NULL);
  glCompileShader(mFragShaderH);
  glGetShaderiv(mFragShaderH, GL_COMPILE_STATUS, &status);
  if (status == 0) {
    LOGE("*** Fragment shader compilation failed, %d", status);
    _printShaderLog(mFragShaderH);
    ABORT_GAME;
  }
  LOGD("Fragment shader compilation succeeded.");

  mProgramH = glCreateProgram();
  if (!mProgramH) {
    LOGE("*** Failed to create program");
    _printProgramLog(mProgramH);
    ABORT_GAME;
  }

  glAttachShader(mProgramH, mVertShaderH);
  glAttachShader(mProgramH, mFragShaderH);
  glLinkProgram(mProgramH);
  glGetProgramiv(mProgramH, GL_LINK_STATUS, &status);
  if (status == 0) {
    LOGE("*** Shader program link failed, %d", status);
    _printProgramLog(mProgramH);
    ABORT_GAME;
  }
  LOGD("Program linking succeeded.");

  glUseProgram(mProgramH);
  mMVPMatrixLoc = glGetUniformLocation(mProgramH, "u_MVP");
  if (mMVPMatrixLoc < 0) {
    LOGE("*** Couldn't get shader's u_MVP matrix location from shader.");